[Grammar] Preposition ‘inside’ vs ‘within’

[northpath]

Which sentences are more common:
We'll be back inside the hour.
Our aim is to get the whole job finished inside a week.
A full report is expected inside three months.
Or
We'll be back within the hour.
Our aim is to get the whole job finished within a week.
A full report is expected within three months.

 

[GoesStation]

Only within is possible.

 

[jutfrank]

They're both possible and understandable but in BrE within is more common.

 

[engee30]

I'm a casual fan of The Final Score on BBC1 and I've heard the phrase inside + time a couple of times.

 

[northpath]

OK, inside+time is no good, but what about inside+place?. For instance:
There are many footpaths inside the national park.
Very little is known of events inside this mysterious country.

 

[Rover_KE]

It's more natural to use 'in' in those examples. 'Inside' is used more for enclosed spaces.